[Imports] N50 imports from Kartverket (The Norwegian Mapping Authority)

[Christoph Hormann]

On Sunday 15 June 2014, Tor wrote:
>
> To decide if an N50 waterway is a stream or a river the following
> criteria are used:
> 1) Local knowledge
> 2) Name ('bekk' means stream,
> 'elv' or 'å' both mean river; no name implies that it's only a
> stream) 3) N50 VANNBR tag where code 2 is 1–3m, code 3 is 3–15m and
> code 4 is ≥15m

This much i understood, what i wanted to know is under what 
conditions the conversion generates waterway=stream and waterway=river 
or natural=wood, natural=scrub and landuse=forest.

It is a good idea and common practice to document this attribute 
conversion scheme on the wiki, for examples see:

http://wiki.openstreetmap.org/wiki/CanVec:_Hydrography_%28HD%29
http://wiki.openstreetmap.org/wiki/Antarctic_Digital_Database/Data

Doing manual verification of taggings is a good idea but still you 
should have reasonable and documented defaults for those values and in 
case of mandatory manual verifications adding a fixme tag meant to be 
removed after the manual check is a good idea since it helps keeping 
track of the process.

-- 
Christoph Hormann
http://www.imagico.de/